A person crosses a 600m long street in 5m. What is speed in km per hour?
a.3.6
b.7.2
c.8.4
d.10
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Answer:
Distance = 600 m= 6/10 km
Time taken = 5 mins = 5/60 = 1/12 hour
Speed = distance/ time
= (6/10)/(1/12)
= 6/10 × 12
= 72/10
= 7.2 km/hr
Hence it is option b.
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